High severity7.5NVD Advisory· Published Jul 9, 2021· Updated Jun 17, 2026
CVE-2021-36154
CVE-2021-36154
Description
HTTP2ToRawGRPCServerCodec in gRPC Swift 1.1.1 and earlier allows remote attackers to deny service via the delivery of many small messages within a single HTTP/2 frame, leading to Uncontrolled Recursion and stack consumption.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/grpc/grpc-swiftSwiftURL | < 1.2.0 | 1.2.0 |
Affected products
5- gRPC Swift/gRPC Swiftdescription
cpe:2.3:a:linuxfoundation:grpc_swift:1.0.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:linuxfoundation:grpc_swift:1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:linuxfoundation:grpc_swift:1.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:linuxfoundation:grpc_swift:1.1.1:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
6- bugs.chromium.org/p/oss-fuzz/issues/detailnvdMailing ListThird Party AdvisoryWEB
- github.com/advisories/GHSA-4rhq-vq24-88gwghsaADVISORY
- github.com/grpc/grpc-swift/releasesnvdRelease NotesThird Party Advisory
- github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gwnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-36154ghsaADVISORY
- github.com/grpc/grpc-swift/releases/tag/1.2.0ghsaWEB
News mentions
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